Thermometer



Nov 19 1935. I D, BOLTON 2,021,283

THERMOMETER Filed Oct. 27, 1934 INVENTOR HARRY D. BOL TON Patented Nov.19, 1935 UNITED STATES PATENT OFFICE THERMOMETER Application October 27,1934, Serial No. 750,346

2 Claims.

This invention relates to thermometers and more particularly to meansfor detachably mounting a thermometer tube on a back or sup port.

Under certain conditions of use, it is desirable to mount a thermometerdetachably on a support by means of clips. However, former clips forthis purpose, soon lose their resilience under customary conditions ofuse so that they fail to re tain the thermometer tube securely in placeon the support.

The present invention has for its purpose the production of novel,reliable means for mounting a thermometer tube detachably on a sup-port.

For an understanding of the invention, reference is made to the drawingin which Fig. 1 is a front elevation of a combined thermometer andsupport incorporating the present invention; Fig. 2 is a verticalsection thereof taken along the channel of the support; Fig. 3 is across-section of the thermometer and support taken substantially on theline 33 of Fig. l; and Figs. 4, 5 and 6 are respectively top, end andside views of a clip suitable for attaching a thermometer to a support.

In the drawing, 5 designates a thermometer support, preferably made ofwood and having a trough or channel in its front. A thermometer tube 7having graduations thereon and provided with a bulb 8 containing anexpansive medium is supported by clips 9 adjacent the bottom of thechannel so that the thermometer is protected against breakage. Anintegral hook ID at the upper end of the thermometer tube engages anotch I I in the support to prevent the tube from moving along thechannel 8, Whereas a hole I2 is provided in the support to receive thebulb 8 to afford further exposure therefor.

While clips have been employed in the past to mount a thermometerdetachably on the support, former clips have been of such constructionthat they soon assume a permanent set even after a limited number ofinsertions in and removals of the thermometer from the support, with theresult that they fail to grip the tube properly.

In accordance with the present invention, novel means for detachablyfastening the thermometer tube on a support is provided. This fastening5 means includes the clips 9, each of which is preferably formed of apiece of somewhat resilient wire or like material, bent intermediate ofits ends to form a loop and base I3. The portions of the wire are thencurved away from the base as 10 at I4 and thereafter are bent toprovidethe arms I5 spaced from but parallelto the base, while the ends I6 ofthese arms are curved inwardly. The ends I6 of each clip grip thethermometer tube therebetween as best illustrated in Fig. 3. The loop I3 of each clip is adapted to receive a hollow rivet I8 passing throughthe support and having its end I 9 peened over. It will be noted thatthe construction of the clip is such that it affords relatively greateffective length in small compass for the resilient tube engaging armsI5, and thereby largely obviates the tendency to set prevalent in priorfastening means utilized to removably supporting a thermometer tube.

What is claimed is,

1. In combination, a support, a thermometer tube, a pair of clips onsaid support detachably gripping said tube, each of said clips having apair of tube gripping arms with the principal axes of said armsextending parallel to the main axis of said tube, said arms havinginturned opposing ends to grip said tube.

2. In combination, a support, a thermometer tube detachably mounted onsaid support, and means including a clip detachably gripping said tube,said clip comprising a strip of material bent intermediate of its endportions to form a loop for engagement with said support and having endportions bent away from said loop and then parallel thereto, to providetube gripping arms having their main axes extending generally parallelto the main axis of said tube.

HARRY D. BOLTON.

